Signal and alarm for railroad-crossings



(No Model.)

H. H. LIEMKE. SIGNAL AND ALARM'FOR RAILROADOROSSINGS.

Patented Feb. 6, 1883.

s Pholo-LiihograuMr. Washingon. nc

UNITED STATES PATENT OFFICE.

'HERMAN H. LI'EMKE, on sr. LOUIS, MISSOURI.

, SIGNAL AND ALARM FOR RAl LROAD-CROSSINGS.

SPECIFICATION forming part of Letters Patent No. 271,876, dated February 6, 1883.

- Application filed April 1 1882. (No model.) 4

T at whom it may concern:

Be it known that I, HERMAN H. LIEMKE, of

, St. Louis, in the county of St. Louis and State and simple in its construction, so as'not to be likely to get out of order, and to act with certainty in the transmission of the signal or alarm.

The various parts and combinations which constitute my invention are hereinafter fully described, and shown in the accompanying drawings, in which- Figure 1 represents a rail in side elevation, with the transmitting apparatus attached, and with the signal also in side elevation. Fig. 2 is a side elevation representing the opposite side of the rail shown in Fig. 1. Fig. 3 is a section on line 3 y of Fig. 2; Fig. 4, a separate view of the eyebolt.

At a suitable distance from the crossing or other point where the signal is to be given I place a piece, A, which, is to receive motion from the wheels of the passing train. This piece may either be set in a recess in the rail or located by the side of the rail sufficiently low down'to receive motion from the wheeltlanges. It is provided with guiding-pins a a, whichlplay in holes in the bed-piece, so as to permit the piece A to have only vertical mo- .tion. Upon the pins a a, and between the ends of the piece A and the bed-piece, I place stout springs b, which serve to keep the piece slightly elevated, and to return it to position after being depressed by the weight of the wheel passing over it. The piece A extends below the rail, being located, as before intimated, either in a recess in the rail or upon the inner side of it. It is provided with an arm, d, which extends under the rail, and is connected by a link to a bell-crank lever, c, pivoted'upon the rail, or upon some suitable standard by the side of it. The upper end of this bell-crank lever is connected to a wire,f. This wire runs along close to the web of the rail through eyebolts 9, provided with suitable frictionrollers, the shanks of which pass through the web of the rail,,and are held by r nuts on the opposite side. These eyebolts are sufficiently near together to properly support the wire which by means of them is held close to the web andnnder the head -of the rail, where it is securely protected and entirely out of the way. The wire extends to the point 6 where the alarm is sounded. At each p'ointis seta post supporting a suitable bell. The wireis connected to a bell-crank lever, h, the horizontal arm of which is connected to another bell-crank lever, It, which supports the bell. Any other suitable means for connecting the wire to the bell may be substituted for those shown. In addition to the sounding of the bell, motion of the wiremay be made to exhibit a signal for additional security.

It will be apparent that the piece A will be subjected to the action of all the wheels on one side of the passing trains, and will be vibrated up and down by ea -h wheel, and thus a continuous ringing be kept up while the train is passing over the pieeeA. The shapeof the piece A is specially adapted'to receive a blow from the wheel, beingformed upon a curve.

The bell may be covered by aroot' to shelter it from thesnow and ice, if desired.

Having thus described my invention, what I claim is-- A railway signal and alarm consisting of the piece A, supported upon guiding-pins and adapted to be depressed by the wheel of the passing train, the bell-crank lever e and arm 61, the wire f,-and the eyebolts g, attached to the webof the rail, and the bell connected to said wire, the parts being combined and .operating substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. HERMAN H. LIEMKE.

Witnesses:

F. L. MIDDLETON, WALTER D. MALDRON. 

